Implemented the scaling of the label and its padding to dynamic type for the RecordingButtonStyle button style in the Recording package target.

Packages/Features/Sources/Recording/RecordingButtonStyle.swift

@@ -2,13 +2,23 @@ import SwiftUI
 
 /// The button style for the controls of a ``RecordingView``.
 ///
-/// The style renders the button's label over a padded, circular red background, shrinks it slightly while pressed, and dims it while disabled.
+/// The style renders the button's label, filled with the background color of the inverted color scheme, over a padded, circular red background, shrinks it
+/// slightly while pressed, and dims it while disabled. Both the label and its padding scale relative to the current dynamic type size.
 struct RecordingButtonStyle: ButtonStyle {
 
     // MARK: Properties
 
+    /// The color scheme of the environment.
+    @Environment(\.colorScheme) private var colorScheme
+
     /// Whether the button allows user interaction.
     @Environment(\.isEnabled) private var isEnabled
+    
+    /// The padding between the button's label and its background, scaled relative to the current dynamic type size.
+    @ScaledMetric private var padding = Constant.Padding.button
+
+    /// The width and height of the button's label, scaled relative to the current dynamic type size.
+    @ScaledMetric private var size = Constant.Size.button
 
     // MARK: Methods
 
@@ -20,10 +30,16 @@ struct RecordingButtonStyle: ButtonStyle {
     ) -> some View {
         configuration.label
             .frame(
-                width: Constant.Size.button,
-                height: Constant.Size.button
+                width: size,
+                height: size
+            )
+            .padding(padding)
+            .scaledToFit()
+            .foregroundStyle(.background)
+            .environment(
+                \.colorScheme,
+                 colorSchemeInverted
             )
-            .padding(Constant.Padding.button)
             .background(
                 Circle()
                     .fill(.red)
@@ -44,6 +60,13 @@ private extension RecordingButtonStyle {
     
     // MARK: Computed
     
+    /// The color scheme opposite to the environment's, under which the label's background fill resolves to the inverted background color.
+    var colorSchemeInverted: ColorScheme {
+        colorScheme == .dark
+            ? .light
+            : .dark
+    }
+
     /// The opacity of the button: dimmed while disabled, fully opaque otherwise.
     var opacity: Double {
         isEnabled
@@ -98,7 +121,7 @@ private enum Constant {
     
     /// The padding constants.
     enum Padding {
-        /// The padding between a button's label and its background.
+        /// The base padding between a button's label and its background, before dynamic type scaling.
         static let button: CGFloat = 8
     }
 
@@ -112,7 +135,7 @@ private enum Constant {
 
     /// The size constants.
     enum Size {
-        /// The width and height of a button's label.
+        /// The base width and height of a button's label, before dynamic type scaling.
         static let button: CGFloat = 16
     }
 }